Environmental Issues Set 1 MCQs

Q1 | What is the effect of catalytic converter on carbon monoxide and nitrogen oxide of exhaust?

Converts them into CO2 andH2O

Converts them into CO2 andNitrogen gas

Converts them into CO2 andNH4

It converts them into CO2 andNO2

Q2 | In which year noise was also included as an air pollutant?

1981

1987

1986

1984

Q3 | Sound waves of_____ decibels causes damage to eardrum or permanently impair hearing?

150db or more

120db or more

More than 80db

110db

Q4 | Which type of pollution causes altered breathing pattern, increased heartbeats and sleeplessness?

Noise pollution

soil pollution

Radioactive pollution

Thermal pollution

Q5 | According to 1990s survey which city ranked 4th among the 41 most polluted cities of the world?

Ankleshwar

Delhi

Japan

China

Q6 | Name the metropolitan city leading the country in its levels of air pollution.

Ankleshwar

Delhi

Chennai

Bangalore

Q7 | Which is the drastic change seen in Delhi public transport after 2002?

All the buses run by CNG

Use of unleaded petrol

Use of LPG in buses

All the buses run by methanol

Q8 | Which is correct according to EURO II norms?

Sulphur can be controlled at 350ppm in diesel and 150ppm in petrol

Sulphur can be controlled at 150ppm in petrol

Lead can be controlled at 350ppm in diesel

Lead can be controlled at 150ppm in petrol

Q9 | Which harmless gases are produced by smokes stakes of thermal power plant and smelters?

N2, O2

CO2

CO, N2

SO2

Q10 | For reducing vehicular pollution which measures are taken by Delhi government?

Phasing out old vehicles

Use of unleaded and low sulphur petrol and diesel

Use of catalytic converter in vehicles

All of these

Q11 | In which cities Bharat stage II is applied from 1st april’2005?

Delhi, Mumbai, Chennai, Baroda, Surat

Delhi, Mumbai, Kanpur, Baroda, Surat

Delhi, Mumbai, Chennai, Baroda, Pune

Mumbai,Pune,Bangalore,Surat,Ahmedabad

Q12 | A substantial fall in the level of which gases have been found between1997 to2005 in Delhi?

CO2,SO2

CO2,CO,SO2

CO2,SO2 ,NO2

CO2,CO,CFC

Q13 | To safeguard our water resource the amendment was passed in the year.

1974

1981

1986

1987

Q14 | Which chemical of petrol inactivates the catalysts of filter for reducing emission of poisonous gases?

Lead

Rhodium

Straunsium

Iron

Q15 | Which colloidal material is seen in domestic sewage?

Sand and silt

Fecal material and bacteria

Sodium and calcium

Phosphorus

Q16 | What happens to the O2 level and BOD of river water at sewage discharge point?

Sharp decline in O2 level and rise in BOD

O2 level and BOD both increases

No change in BOD but O2 level increases

No change in O2 level but BOD increases

Q17 | What is the reason for mortality of fish in water body?

Biodegradation of organic matter by microbes

Due to algal bloom

Due to decrease in BOD

a and b both

Q18 | Which plant is known as ‘Terror of Bengal’?

Chara

Wulffia

Hydrilla

Eichhornia

Q19 | Which is world’s most problematic aquatic weed?

Chara

Wulffia

Hydrilla

Eichhornia

Q20 | Which compound used in refrigerator is a source of chlorine

Freon

HFC

BHC

None

Q21 | What is biological magnification of DDT in large size fish eating birds?

25ppb

25ppm

2.5ppm

0.25ppm

Q22 | By which method large number of particles of pollutants are separated?

Cyclone collector

Porous filter

Electrostatic precipitator

By using solvent

Q23 | Which of the following is not responsible for pollution?

Wood

SO2

Unsaturated carbon

Solar energy

Q24 | The population of eagles and hawks is declining because of,

Food scarcity

game lovers

Harmful effects of pesticides

Very few dead animals are found in fields

Q25 | BOD of a river was found to be very low, this means the water

Was clean

Was polluted

Contains algae

Contains other dissolved minerals